The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 20, 2010
Filed:
May. 30, 2008
Applicants:
Takeshi Gouko, Miyagi, JP;
Kenji Echizen, Miyagi, JP;
Mikio Sato, Miyagi, JP;
Akio Koshita, Miyagi, JP;
Inventors:
Takeshi Gouko, Miyagi, JP;
Kenji Echizen, Miyagi, JP;
Mikio Sato, Miyagi, JP;
Akio Koshita, Miyagi, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 33/38 (2006.01); B29C 45/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A boundary lubricant filmis formed on a stampercontact portion of a stationary mirrorand/or a stationary mirrorcontact portion of the stamper. The boundary lubricant filmcontains one of kinds of phosphate esters. A material is injected into a cavity. As a result, a disc substrate for an optical disc is molded.